Engineered for excellence, compliant with ASTM, ASME, EN, and JIS standards.
Established in 2003, Shaanxi Kerlimar Engineers Co., Ltd. has evolved from a specialized trade entity into a global titan in the steel manufacturing and technological innovation sector. As a leading China 3/4 carbon steel pipe manufacturer, our expertise spans across carbon steel, alloy steel, and stainless steel materials.
Our 3/4" (nominal pipe size) offerings are engineered for critical applications where structural integrity and fluid dynamics meet. Whether it is ASTM A106 Grade B for high-temperature service or API 5L for oil and gas transmission, Kerlimar ensures that every millimeter of pipe reflects our 21-year commitment to quality.
Our roadmap integrates AI-driven molecular monitoring in the smelting process. By optimizing the carbon-manganese ratio in our 3/4 steel pipes, we achieve a 15% increase in tensile strength without compromising weldability.
Following our participation in the Dubai COP28 Conference, we are transitioning toward "Green Steel" initiatives. We are reducing the carbon footprint of our manufacturing process by utilizing electric arc furnaces (EAF) powered by renewable energy.
Led by Chairman Mr. Ming SUN, we are pioneering Vertical Axis Wind Power Technology. Our high-precision pipes are now being integrated as structural masts and torque tubes for new-generation maglev wind turbines.
How 3/4 Carbon Steel Pipes Power the Modern World
In high-pressure upstream environments, 3/4" carbon steel pipes serve as essential lines for hydraulic control systems and chemical injection points, ensuring safe and efficient flow management.
Utilizing high-precision ERW pipes, our solutions provide the thermal conductivity and pressure resistance required for industrial-scale heat exchangers and chilled water systems.
Our square and rectangular section tubes are the backbone of smart city architecture, used in everything from modern transit stations to modular housing frames.

Mr. Ming SUN, a strong environmentalist and fan of technological innovation, leads our vision. Since 2019, Kerlimar has shifted focus towards new vertical axis wind power technology to solve energy bottlenecks. With over 40 authorized patents, we are not just a manufacturer; we are a research powerhouse solving climate change challenges through engineering.
Our pipes are the physical foundation of our patented rail maglev and floating wind power designs, demonstrating a unique synergy between traditional steel production and futuristic energy solutions.
In 2020, we earned the National High-tech Enterprise certification. Our excellence was further validated at the China-Finland High Technology Match Conference and the 11th China Innovation and Entrepreneurship Competition.
Today, our 10KW-500KW wind units are entering experimental phases, contributing to rural revitalization and the global "double carbon" goal. We provide the steel that builds a future where the average temperature rise stays below 1.5°C.

Our Factory 4.0 integration utilizes automated welding sensors that monitor heat input in real-time, ensuring zero-defect seams in every 3/4 carbon steel pipe produced.
Located in the industrial heart of Shaanxi, we leverage the "Belt and Road" infrastructure for rapid rail and sea transit, ensuring timely delivery to over 60 countries.
By partnering with Tier-1 steel mills like Baosteel and Tisco, we guarantee the traceability of our raw materials, providing Mill Test Certificates (MTC) according to EN 10204 3.1.
Navigating international trade requires more than just a good product. Shaanxi Kerlimar provides comprehensive compliance support to ensure your procurement process is seamless.
Full compliance for North American engineering standards.
Adherence to European structural and pressure standards.
Precision alignment with East Asian technical requirements.
Certified quality management across all operational tiers.